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Fort Worth police are investigating if a string of armed robberies are connected. Two of the robberies happened on the same night less than a block from each other on South Hulen Street. (Published Friday, Nov. 30, 2012)

The Fort Worth Police Department is investigating if a recent string of armed robberies are connected. The two most recent robberies happened Sunday night less than a block from each other on South Hulen Street.

In surveillance video provided by the Express Mart, which was one of two businesses robbed, you never get a good look at the man's face, let alone his gun. However, the store's manager and police say the man had a gun tucked into his waist band.

As the man approached the counter, appearing to make a purchase, he pulled up his shirt to show the gun. He then demands money and grabs the cash from the register.

A similar robbery happened just 90 minutes earlier a block away at the Tuesday Morning store on South Hulen Street. A Fort Worth Police brief says after the clerk bagged the man's items, "the suspect pulled up his shirt and displayed a gun on his waist band."

So far investigators have not said if the two robberies are connected or if the same man was involved.

"It's a sad situation that people would stoop that low, do that thing, do that crime," said John Mills, manager at Title Boxing Club.

Mills' business had only been only for two days when the robberies happened Sunday night and he noticed the police response.

"It's off-putting, but at least we know we have cops that are going to come around circle for an hour and a half looking for people," Mills said. "So, that's always an upside."

Police are also looking into similar armed robberies with men with a similar description from last week.

On Thursday, in a span of two hours, a Subway near Granbury Road and a Palm Beach Tan near Hulen Mall were robbed.

On Monday a coffee shop inside Hulen Mall was robbed, as was the Jo-Ann Fabrics next door to Tuesday Morning and Title Boxing Club.

Although police have not yet linked any of the crimes, area businesses hope they catch those responsible soon.